March, 1907. Iron Meteorites — Farrington. 



105 



On strong etching the surface becomes dull with a peculiar velvet sheen. 

 No cleavage has been observed. On the other hand, a certain orien- 

 tation of similarly situated particles is indicated by the appearance in 

 reflected light. The structure of the nickel-iron is compact; the con- 

 tent in nickel plus cobalt 16-17 per cent. Except for the etch bands, 

 the members of this group are similar in chemical composition and 

 luster to the etched faces of members of the Morradal group. 

 Bic Streaks. 



